Improved spking-punch



@einen tetra getest @fitta Letters .Patent No.' 74,241, datedl1"ebruary` 11, 1868.

turnover SPRING-PUNCH.

@the .tlgemle nicht tu it that hitters @that mit making hatt at tinsame.

TO ALL WHOM` IT MAY CONCERN: p p

Be it known that LALBERT UTLnY NOBLE, of Kalamazoo, county ot'Kalamazoo, and State of Michigan, have invented a new and usefulRevolving Spring-Punch; and I do hereby declare that the following is a'clear, full, and exact description of the construction and operation ofthe same, reference being had tothe annexed drawings, making a part ofthis specification. n

The general construction of my revolving spring-punch, with theexception of the arrangement ot' the revolving head and its attachments,as hereinafter described, is precisely the same as the ordinarysingle-barrel spring-punch; The form of joint, the attachment of thespring, and the cutting-plate, are the same. The handles may be modifiedin form and in length of leverage, if desirable. i i

Figure 1, of the drawing, is a perspective side View of my revolvingpunch in the usual form.

X X, the handles; Y, the spring; Z, the cutting-plate; a a a, the armsof the revolving'head; b I b, the punches attached; W, the joint. Theupper jaw, made with an enlargement of circular format its extremity, asshown in the drawing, is cleft perpendicularly, and the two side barsthus formed are separated, to include a space with parallel sides,suiicient for the reception of the revolving head. The revolving head,shown at Figure 2, is made ci' steel, iron, or other metal, is ofauniform thickness suihcicnt to admit'of the attachment ci' the barrelsor punches. The three arms a a a are of equal size, and equidistant fromeach other. To cach of the arms are inserted and fixed, in the usualmanner, the punches b b b, which may be of different sizes. The punchesare of the usual forni, open at the top, to permit the discharge of`chips, andare attached to the arms in the position represented in thedrawing. At the centre of the revolving head is a hole, for attachingthe shaft or pinion on which it turns. The revolving head, thusconstructed, is mounted between the side bars, holes being made ,therefor the reception of its pinion. When mounted, Athe pinion is iixedfirmly in the revolving head, but turns loosely in the side bars, andthe eide bars, being made thin and elastic, act as springs, holdingclosely to the revolving head. On both ofthe inner sides of the sidebars, I make a notch or recess, in

shape and size corresponding respectively with the arms of the revolvinghead. The back portion of thisV l recess is made square, while itsanterior portion is rounded or inclined.

Figure 3 is an inside view of one of the side bars detached. C shows theform and location of the recess or notch. e Y

Figure 4 is an edge view of iig. 3, C showing the recess on the topedge. i

When the punch is in use, the position of the barrelemployed in the actof cutting is perpendicular to the cutting-plate, and the arm of therevolving head, immediately behind, rests in thc recess or notch at C,which serves as an abutment to prevent the revolving headfrom turningback. '.lobring another punch iuto action, the revolving head is rotatedforward. As the pinion turns loosely in the side bars, but is iixed tothe head, the arm slides over the rounded or inclined portion of thenotch C, spreading the side bars slightly asuuder. `When the punch is inposition, the arm, immediately behind, falls .into the notch C, and isheld firmly by the lateral pressure of the spring side bars. Thusdifferent sizes are brought into use.

The advantages of thisform of revolving punch are, the combination ofthree different sizes of punch in one tool. 'lhe construction of thepunch-barrel, and its position in the act of cutting, are preciselysimilar to that of a common single-spring punch, and it as readilycle'ars itself of chips. The relative position of the several punches issuch as to ai'ord room for the strap or article operated upon, limitedonly by the length of jaw.

I am aware that revolving spring-punches of divers forms are old andwell known. I therefore make no claim to spring-punches with revolvingheadspas such; but

What I do claim as my invention, and desire to secure by Letters Patent,is

The form' and construction of the revolving head, and punches attached,as herein described, in combination with the spring side bars forholding and mounting the same, substantially as'herein set forth.

ALBERT UTLEY NOBLE.

. Witnesses:

ROLLIN Woon, F. M. Duncan.

